mellkasizmok

Mellkasizmok refers to the muscles of the chest. These muscles play a crucial role in respiration, upper body movement, and posture. The primary muscles of the chest include the pectoralis major and pectoralis minor. The pectoralis major is a large, fan-shaped muscle that covers the upper chest. It is responsible for adduction, medial rotation, and flexion of the arm at the shoulder joint. The pectoralis minor is a smaller muscle located beneath the pectoralis major. It helps to stabilize the scapula and can assist in movements like protraction and depression of the shoulder.

Other muscles contributing to chest functionality include the serratus anterior, which is located on the side of the rib cage and aids in scapular protraction, and the intercostal muscles, which are situated between the ribs and are essential for breathing. The external intercostals lift the ribs, expanding the chest cavity during inhalation, while the internal intercostals depress the ribs, aiding in exhalation.

These muscles are activated during various activities, from simple breathing to complex athletic movements like pushing, throwing, and lifting. Their strength and flexibility are important for overall upper body function and injury prevention. Conditions affecting chest muscles can range from strains and sprains to more serious injuries impacting respiratory function.